Tonight, Facebook CEO Mark Zuckerberg and COO Sheryl Sandberg will appear together in a rare joint interview on the PBS Show Charlie Rose tonight. Hosted, of course, by Charlie Rose, the show will discuss upcoming Facebook features, from the Timeline redesign to new privacy settings. The high profile joint interview of Zuckerberg and Sandberg will also dive into Facebook’s upcoming IPO — with Sandberg taking the lead as the “adult supervisor” of the hugely popular social network. After the recent Groupon IPO, Facebook feels the time is right to establish their company as solid business for prospective investors.

Prior to Facebook, Sandberg was Vice President of Global Online Sales and Operations at Google, where she built and managed the online sales channels for advertising and publishing and operations for consumer products worldwide. Here’s a preview from tonight’s Charlie Rose show:

Catch Mark Zuckerberg and Sheryl Sandberg tonight on PBS’s Charlie Rose, airing at 11pm in most time zones (but check your local listings).

Below, watch Zuckerberg and Sandberg appearing at AllThingsD’s D6 in 2008: